Anti-pinch electric pedal

Abstract

The invention relates to the technical field of electric pedals for electric automobiles, and discloses an anti-pinch electric pedal which comprises a pedal plate and further comprises a stretching and releasing unit arranged on the pedal plate, and the stretching and releasing unit comprises a moving part and a driving part which are arranged on the pedal plate; the lifting element and the control part are arranged in the transmission assembly, so that when the feet of a passenger are placed on the trigger plate on the foot pedal, even if a mechanical part or an inductor is damaged, the transmission rod cannot drive the rotating rod to rotate, then the foot pedal cannot be withdrawn to pinch the feet, and only when the feet of the passenger leave the trigger plate, the driving rod cannot drive the rotating rod to rotate. The trigger plate can enable the transmission rod to drive the rotating rod to rotate again through the lifting element, then the foot pedal can be retracted, and the situation that when a mechanical part or an inductor is damaged, the feet of a passenger are pinched by the retracted foot pedal is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of electric pedals for electric vehicles, and in particular to an anti-pinch electric pedal. Background Art

[0002] The electric pedal on an electric vehicle is an automatically retractable pedal device installed on both sides of the vehicle body. Its main function is to facilitate passengers to get off the vehicle, especially for SUV-type electric vehicles with a higher chassis. When the door is opened, the electric pedal will automatically extend to reduce the step height of passengers when getting on and off the vehicle. After the door is closed, the pedal will automatically retract to restore the original appearance and passability of the vehicle. The electric pedal consists of a pedal body, a motor and transmission system, a sensor system and a control unit. Its working principle is that when the door is opened, the door sensing sensor sends a signal to the control unit, the control unit drives the motor to run, and the motor drives the pedal to extend outward through the transmission system until it reaches the predetermined position. When the door is closed, the door sensing sensor sends a signal again, and the control unit reverses the motor and retracts the pedal through the transmission system.

[0003] Although electric step can effectively improve the convenience of passengers getting on and off the vehicle, the following problems still exist. The electric step is driven by a motor to achieve movement during the extension and retraction process. If the mechanical components fail, such as the transmission chain, gears and other components, or if they get stuck, the movement of the step may become uncontrolled. At this time, when the passenger's feet are still in the movement path of the step, it is easy to cause pinching. Even if there is an anti-pinch sensing system, if the sensing is not sensitive enough, there is a sensing blind spot, the response is delayed, or the sensor is damaged, the passenger's feet cannot be detected in time, which may also cause pinching incidents. Summary of the invention

[0004] In view of the problem in the prior art that mechanical parts are damaged or sensors are faulty, resulting in injuries to passengers' feet, an anti-pinch electric pedal is proposed.

[0005] The present application provides an anti-pinch electric pedal, the purpose of which is: by arranging a lifting element and a control element in a transmission assembly, when a passenger's foot is placed on a trigger plate on the footboard, even if a mechanical component or a sensor is damaged, the transmission rod will not drive the rotating rod to rotate, and the footboard will not be retracted to pinch the foot. Only when the passenger's foot leaves the trigger plate can the trigger plate enable the transmission rod to drive the rotating rod to rotate again through the lifting element, and then the footboard can be retracted, effectively avoiding the situation where the passenger's foot is pinched by the retracted footboard when the mechanical component or the sensor is damaged.

[0006] The technical solution of the present invention is: an anti-pinch electric pedal, comprising a footboard, and also comprising an extension unit arranged on the footboard, wherein the extension unit comprises a moving part and a driving part arranged on the footboard;

[0007] The moving parts include a plurality of fixed plates arranged on the side walls of the footboard, rotating shafts respectively arranged at the lower ends of the plurality of fixed plates, movable plates arranged on the outer walls of the rotating shafts, a plurality of rotating rods respectively arranged at one end of the plurality of movable plates, a plurality of fixed base plates respectively arranged at both ends of the plurality of rotating rods, a plurality of linkage gears respectively arranged on the outer walls of the plurality of rotating rods, and a transmission chain arranged between the plurality of linkage gears;

[0008] The plurality of rotating shafts are fixedly mounted on the lower ends of the corresponding fixed plates, the plurality of movable plates are slidably mounted on the outer walls of the corresponding rotating shafts, one ends of the plurality of movable plates are fixedly mounted on the outer walls of the corresponding rotating rods, and the transmission chain sleeve is mounted between each linkage gear.

[0009] Furthermore, the driving component includes a driving cover arranged on the upper end of a fixed seat plate located in the middle position, a pad arranged on the upper end of the fixed seat plate, a servo motor arranged on the upper end of the pad, a driving rod arranged on the driving end of the servo motor, a bevel gear 1 arranged at one end of the driving rod, an intermediate plate arranged on the fixed seat plate, a mounting circular groove opened on the intermediate plate, a one-way bearing arranged in the mounting circular groove, a transmission rod arranged on the inner ring of the one-way bearing, a connecting plate arranged at the upper end of the transmission rod, and a bevel gear 2 arranged on the connecting plate, the bevel gear 1 and the bevel gear 2 are meshed with each other, a transmission assembly is installed between the one-way bearing and the corresponding rotating rod, and a clamping assembly is installed between the transmission rod and the outer ring of the one-way bearing.

[0010] Furthermore, the transmission assembly includes a transition rod arranged at the upper end of the corresponding rotating rod, a connecting tube arranged at the upper end of the transition rod, and the upper end of the connecting tube is fixedly connected to the lower end of the outer ring of the one-way bearing.

[0011] Furthermore, the locking assembly includes vertical grooves on both sides of the outer wall of the transmission rod, a sliding plate slidably installed in the two vertical grooves, a telescopic spring installed between the sliding plate and the connecting plate, two clamping plates arranged at the lower end of the sliding plate, two clamping grooves on the upper end of the outer ring of the one-way bearing, the lower ends of the two clamping plates are located in the corresponding clamping grooves, and a lifting element is installed on the side wall of the sliding plate.

[0012] Furthermore, the lifting element includes a common bearing arranged on the side wall of the sliding plate, a side plate arranged on the outer ring of the common bearing, two lifting rods arranged at the lower end of the side plate, two liquid level cylinders arranged in the fixed seat plate, and piston plates respectively arranged at the lower ends of the two lifting rods. The two piston plates are respectively slidably installed on the inner walls of the corresponding liquid level cylinders, and a control component is installed between the two liquid level cylinders and the footboard.

[0013] Furthermore, the control component includes a square groove opened at the upper end of the footboard, two return springs arranged on the bottom end of the square groove, a trigger plate arranged at the upper ends of the two return springs, the trigger plate is slidably installed in the square groove, a liquid dispensing block arranged at the upper end of the movable plate located in the middle position, an infusion hole opened on the inner wall of the square groove, a conduit 1 arranged between the infusion hole and the liquid dispensing block, two conduits 2 arranged between the liquid dispensing block and the two liquid level cylinders, and the two liquid level cylinders are connected to the inside of the square groove through conduit 2 and conduit 1.

[0014] Furthermore, the conduit 1 and the conduit 2 are both corrugated hoses, and the square groove, the conduit 1, the conduit 2, and the liquid distribution block are all filled with hydraulic oil.

[0015] Furthermore, a plurality of anti-slip grooves are provided on the upper end of the trigger plate.

[0016] Beneficial effects of the present invention:

[0017] 1. By setting a one-way bearing and a clamping assembly, when the sensor or mechanical parts are normal, the transmission rod can normally drive the corresponding rotating rod to rotate through the clamping assembly, thereby controlling the extension and retraction of the footboard. When the passenger's foot is on the footboard, the clamping assembly slides upward through the control member and the lifting element, thereby releasing the control of the transmission rod over the rotating rod. Even if the mechanical parts or sensors fail and the footboard needs to be retracted, the transmission rod will not drive the rotating rod to rotate due to the one-way bearing, and the footboard cannot be retracted, causing a pinching injury, thereby effectively improving the safety of the electric step.

[0018] 2. The cost of the anti-pinch sensing system is relatively high, and the long-term shaking of the tram during driving may cause damage to the internal components of the sensor, which makes it difficult to repair the damaged sensor. Compared with the anti-pinch sensing system, the present invention has a simple structure and a low cost. When the electric pedal is damaged or fails, it is easy for maintenance personnel to repair it. While greatly improving the safety of the electric pedal, it greatly reduces the production cost and effectively avoids the occurrence of passengers' feet being pinched. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure from a first viewing angle of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the driving component of the present invention;

[0021] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 4 It is a schematic diagram of the structure of the moving parts of the present invention;

[0023] Figure 5 is a schematic diagram of a second viewing angle stereoscopic structure of the present invention;

[0024] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0025] Figure 7 It is a schematic diagram of the transmission assembly structure of the present invention;

[0026] Figure 8 It is a schematic diagram of the installation structure of the telescopic spring of the present invention;

[0027] Fig. 9 It is a schematic diagram of the side panel installation structure of the present invention;

[0028] Fig.10 It is a schematic diagram of the vertical slot structure of the present invention;

[0029] Fig.11 It is a schematic diagram of the installation structure of the card board and the card slot of the present invention;

[0030] Fig.12 For the present invention Fig.11 The enlarged structural diagram at C in the middle;

[0031] Fig.13 It is a schematic diagram of the control component structure of the present invention.

[0032] In the figure:

[0033] 1. Footboard; 2. Fixed plate; 3. Rotating shaft; 4. Movable plate; 5. Rotating rod; 6. Fixed seat plate; 7. Linkage gear; 8. Transmission chain; 9. Driving cover; 10. Pad; 11. Servo motor; 12. Driving rod; 13. Bevel gear one; 14. Intermediate plate; 15. One-way bearing; 16. Transmission rod; 17. Connecting plate; 18. Bevel gear two; 19. Transition rod; 20. Connecting cylinder; 21. Vertical groove; 22. Sliding plate; 23. Telescopic spring; 24. Card plate; 25. Card groove; 26. Ordinary bearing; 27. Side plate; 28. Lifting rod; 29. ​​Liquid level cylinder; 30. Piston plate; 31. Square groove; 32. Reset spring; 33. Trigger plate; 34. Liquid dispensing block; 35. Infusion hole; 36. Catheter one; 37. Catheter two. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] Example 1, reference Figure 1-Figure 4, which is the first embodiment of the present invention, provides an anti-pinch electric pedal, including a pedal board 1, and also includes an extension unit installed on the pedal board 1, the extension unit includes a moving part and a driving part installed on the pedal board 1.

[0036] The moving parts include a plurality of fixed plates 2 fixedly mounted on the side walls of the footboard 1, rotating shafts 3 respectively fixedly mounted on the lower ends of the plurality of fixed plates 2, a movable plate 4 rotatably mounted on the outer wall of the rotating shaft 3, a plurality of rotating rods 5 respectively fixedly mounted on one end of the plurality of movable plates 4, a plurality of fixed seat plates 6 respectively rotatably mounted at both ends of the plurality of rotating rods 5, a plurality of linkage gears 7 respectively fixedly mounted on the outer walls of the plurality of rotating rods 5, and a transmission chain 8 sleeved and mounted between the plurality of linkage gears 7.

[0037] Multiple rotating shafts 3 are fixedly installed on the corresponding lower ends of the fixed plates 2, multiple movable plates 4 are slidably installed on the corresponding outer walls of the rotating shafts 3, one ends of the multiple movable plates 4 are fixedly installed on the outer walls of the corresponding rotating rods 5, and the transmission chain 8 is sleeved and installed between each linkage gear 7.

[0038] Specifically, the function of the moving component is to control the extension and retraction of the footboard 1. By controlling the rotation of the rotating rod 5 located in the middle position, the corresponding fixed linkage gear 7 on the rotating rod 5 rotates synchronously. The rotation of the linkage gear 7 drives the corresponding other linkage gears 7 to rotate synchronously through the transmission chain 8, and then drives the other rotating rods 5 to rotate. When multiple rotating rods 5 rotate synchronously, the overall movement of the footboard 1 will be driven through the fixed plate 2, and the extension and retraction of the footboard 1 can be controlled by controlling the rotation direction of the multiple rotating rods 5. A mounting plate (not shown in the figure) is fixedly installed on the multiple fixed seat plates 6, and the multiple fixed seat plates 6 and the footboard 1 are installed at the lower ends of both sides of the electric vehicle (not shown in the figure) through the mounting plate.

[0039] Reference Figure 5-Figure 7 The driving components include a driving cover 9 fixedly mounted on the upper end of a fixed seat plate 6 located in the middle position, a pad 10 fixedly mounted on the upper end of the fixed seat plate 6, a servo motor 11 fixedly mounted on the upper end of the pad 10, a driving rod 12 fixedly mounted on the driving end of the servo motor 11, a bevel gear 13 fixedly mounted on one end of the driving rod 12, an intermediate plate 14 fixedly mounted on the fixed seat plate 6, a mounting circular groove provided on the intermediate plate 14, a one-way bearing 15 rotatably mounted in the mounting circular groove, a transmission rod 16 fixedly mounted on the inner ring of the one-way bearing 15, a connecting plate 17 fixedly mounted on the upper end of the transmission rod 16, a bevel gear 2 18 fixedly mounted on the connecting plate 17, the bevel gear 13 and the bevel gear 2 18 are meshed with each other, a transmission assembly is installed between the one-way bearing 15 and the corresponding rotating rod 5, and a clamping assembly is installed between the transmission rod 16 and the outer ring of the one-way bearing 15.

[0040] Specifically, the function of the driving component is to control the rotation and rotation direction of the rotating rod 5 located in the middle position. A sensor (not shown in the figure) is installed at the door of the electric car. The sensor is electrically connected to the servo motor 11. When the door of the electric car is opened, the sensor transmits the door opening signal to the servo motor 11 and controls the driving end of the servo motor 11 to rotate. The servo motor 11 drives the rotating rod 5 to rotate through some driving components. The rotation of multiple rotating rods 5 synchronously drives the footboard 1 to extend outward. At this time, the footboard 1 is in a working state. When the door of the electric car is closed, the sensor transmits the door closing signal to the servo motor 11 again and controls the servo motor 11 to rotate in the opposite direction, and then the multiple rotating rods 5 rotate in the opposite direction to retract the footboard 1.

[0041] The existing anti-pinch recognition system realizes the anti-pinch function by setting a recognizer. However, when the passenger's foot is still on the step 1, if the recognizer in the anti-pinch recognition system is damaged and fails to recognize or transmit the signal to the servo motor 11, when the step 1 is retracted, and the electric vehicle is in a shaking state during a long period of movement, the internal parts of the recognizer in a long-term shaking state are very easy to be damaged, and the occurrence of pinching cannot be well avoided. Inspired by this situation, the present invention is designed to "directly cut off" the connection between the transmission rod 16 and the corresponding rotating rod 5 when the passenger's foot is on the step 1. In this way, when the passenger's foot is on the step 1, even if the recognizer is damaged, when the step 1 is retracted, only the transmission rod 16 drives the inner ring of the one-way bearing 15 to "idle" (the working principle of the one-way bearing 15 is that when the inner ring of the one-way bearing 15 rotates forward, its inner ring will not drive the outer ring to rotate, and when the one-way bearing 15 rotates reversely, its inner ring will drive the outer ring to rotate synchronously). The direction in which the rotating rod 5 rotates to drive the footboard 1 to be retracted is set to be forward rotation. In this way, even when the identifier or sensor fails and causes the footboard 1 to be retracted, if there are passenger feet on the footboard 1, the transmission rod 16 cannot drive the corresponding rotating rod 5 to rotate through the locking assembly. Only when there are no passenger feet on the footboard 1, the footboard 1 will be retracted.

[0042] Example 2, reference Figure 7-Figure 11, which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the transmission assembly includes a transition rod 19 fixedly mounted on the upper end of the corresponding rotating rod 5, a connecting tube 20 fixedly mounted on the upper end of the transition rod 19, and the upper end of the connecting tube 20 is fixedly connected to the lower end of the outer ring of the one-way bearing 15. The clamping assembly includes vertical grooves 21 opened on both sides of the outer wall of the transmission rod 16, a sliding plate 22 slidably mounted in the two vertical grooves 21, a telescopic spring 23 is installed between the sliding plate 22 and the connecting plate 17, two clamping plates 24 fixedly mounted on the lower end of the sliding plate 22, two clamping grooves 25 opened on the upper end of the outer ring of the one-way bearing 15, the lower ends of the two clamping plates 24 are located in the corresponding clamping grooves 25, and a lifting element is installed on the side wall of the sliding plate 22.

[0043] The lifting element includes a plain bearing 26 fixedly mounted on the side wall of the sliding plate 22, a side plate 27 fixedly mounted on the outer ring of the plain bearing 26, two lifting rods 28 fixedly mounted at the lower end of the side plate 27, two liquid level cylinders 29 fixedly mounted in the fixed seat plate 6, and piston plates 30 respectively fixedly mounted at the lower ends of the two lifting rods 28. The two piston plates 30 are respectively slidably mounted on the inner walls of the corresponding liquid level cylinders 29, and a control component is installed between the two liquid level cylinders 29 and the footboard 1.

[0044] Specifically, the function of the transmission component is: when the outer ring of the one-way bearing 15 rotates, it can drive the corresponding rotating rod 5 at the lower end to rotate synchronously. The function of the clamping component is: when the inner ring of the one-way bearing 15 rotates forward, it will not drive its outer ring to rotate. Therefore, by designing the clamping component, when the inner ring of the one-way bearing 15 rotates forward normally, it can drive its outer ring to rotate through the clamping plate 24, and then drive the corresponding rotating rod 5 to rotate through the transmission component, so as to realize the normal retraction of the footrest 1. Because the clamping plate 24 is fixedly installed under the sliding plate 22, when the sliding plate 22 moves upward along the vertical groove 21, The card plate 24 is separated from the card slot 25, so that the inner ring of the one-way bearing 15 will not drive the outer ring to rotate when it rotates in the forward direction. Through this principle, when the passenger's foot is located above the footboard 1, the sliding plate 22 can be moved upward along the vertical groove 21 through the control member, so that the card plate 24 is separated from the card slot 25, thereby "cutting off" the connection between the transmission rod 16 and the rotating rod 5, playing a guarantee role, so that when the sensor or identifier fails in time, the rotation of the transmission rod 16 cannot drive the rotating rod 5 to rotate synchronously and retract the footboard 1, thereby avoiding the passenger's foot from being pinched from the source.

[0045] The remaining structures are the same as those of Example 1.

[0046] Example 3, reference Figure 7 as well as Figure 12-13, which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that the control member includes a square groove 31 opened at the upper end of the pedal 1, two return springs 32 fixedly installed at the bottom end of the square groove 31, a trigger plate 33 fixedly installed at the upper ends of the two return springs 32, the trigger plate 33 is slidably installed in the square groove 31, a liquid dispensing block 34 fixedly installed at the upper end of the movable plate 4 located in the middle position, an infusion hole 35 opened on the inner wall of the square groove 31, a conduit 1 36 fixedly installed between the infusion hole 35 and the liquid dispensing block 34, two conduits 2 37 fixedly installed between the liquid dispensing block 34 and the two liquid level cylinders 29, and the two liquid level cylinders 29 are connected to the inside of the square groove 31 through conduits 2 37 and conduits 1 36. Conduits 1 36 and conduits 2 37 are both corrugated hoses, and the square groove 31, conduits 1 36, conduits 2 37, and the liquid dispensing block 34 are all filled with hydraulic oil. A plurality of anti-skid grooves are opened at the upper end of the trigger plate 33.

[0047] Specifically, the principle of the control component is as follows: when the passenger's foot is located above the footrest 1, the trigger plate 33 is subjected to the pressure and gravity of the passenger's foot, causing it to slide downward along the square groove 31. During the downward sliding process of the square groove 31, the hydraulic oil inside the square groove 31 is squeezed, so that the hydraulic oil inside the square groove 31 enters the corresponding liquid level cylinder 29 through the conduit 1 36, the liquid distribution block 34, and the conduit 2 37 during the squeezing process. As the hydraulic oil inside the liquid level cylinder 29 rises, the piston plate 30 moves upward under the action of the hydraulic oil, and then drives the side plate 27 to move upward through the lifting rod 28. During the upward movement of the side plate 27, the sliding plate 22 is driven to move upward along the vertical groove 21, so that the card plate 24 is separated from the card slot 25. In this way, even if the sensor fails and the footboard 1 is to be retracted, the rotation of the transmission rod 16 cannot drive the corresponding rotating rod 5 to rotate, and thus the footboard 1 cannot be retracted, which can directly prevent the passenger's feet from being pinched. Similarly, only when there is no passenger's foot on the trigger plate 33, the card plate 24 will be located inside the card slot 25. In this case, the footboard 1 will be retracted under the action of the driving component, avoiding the passenger's feet from being pinched. The purpose of designing the conduit 1 36 and the conduit 2 37 as a corrugated hose is that when the movable plate 4 rotates normally, the conduit 1 36 and the conduit 2 37 can be bent and stretched normally, ensuring the normal connection of the conduit 1 36 and the conduit 2 37 when the movable plate 4 rotates normally. An anti-skid groove is provided on the trigger plate 33 to prevent passengers from slipping when using the footboard 1.

[0048] The remaining structure is the same as that of Example 2.

[0049] Based on Examples 1-3, the working principle of the present invention is as follows:

[0050] The present invention is installed on the bottom ends of both sides of the electric vehicle through the mounting plate, and a sensor is installed at the door of the electric vehicle, so that the servo motor 11 is electrically connected to the sensor. When the door of the electric vehicle is opened, the sensor transmits an opening signal and controls the driving end of the servo motor 11 to rotate, and drives the transmission rod 16 at its lower end to rotate synchronously through the bevel gear 13 and the bevel gear 2 18. The transmission rod 16 rotates through the sliding plate 22 and the clamping plate 24 on the outer wall to drive the outer ring of the one-way bearing 15 to rotate synchronously. The outer ring of the one-way bearing 15 rotates through the transition rod 19 and the connecting tube 20 to drive the corresponding rotating rod 5 to rotate. The rotating rod 5 drives the remaining rotating rods 5 to rotate synchronously through the transmission chain 8, so that multiple movable plates 4 drive the footboard 1 to extend through the fixed plate 2, which is convenient for passengers to get on and off the vehicle.

[0051] When the passenger's foot is located on the trigger plate 33 on the footboard 1 during boarding or getting on the bus (not completely boarding or getting on the bus), the trigger plate 33 slides downward along the square groove 31, and squeezes the hydraulic oil in the square groove 31 into the conduit 1 36, and enters the corresponding liquid level cylinder 29 through the liquid distribution block 34 and the conduit 2 37, so that the hydraulic oil level in the liquid level cylinder 29 rises, thereby driving the internal piston plate 30 to move upward synchronously. During the upward movement of the piston plate 30, the side plate 27 is driven to move upward synchronously through the lifting rod 28. During the upward movement of the side plate 27, the card plate 24 at the lower end thereof is driven to move upward synchronously through the sliding plate 22. The servo motor 11 receives a signal to retract the footboard 1, and the servo motor 11 can only drive the transmission rod 16 to rotate through the driving end. Since the transmission rod 16 drives the inner ring of the one-way bearing 15 to rotate in the positive direction, and the card plate 24 cannot drive the outer ring to rotate through the card slot 25 due to its rise, the transmission rod 16 can only drive the inner ring of the one-way bearing 15 to rotate idly, and the footboard 1 cannot be retracted by rotating the outer ring of the one-way bearing 15, thereby solving the problem of the footboard 1 being pinched when there is a passenger's foot on the footboard 1.

[0052] Similarly, when the passengers have completely boarded or alighted from the vehicle, the trigger plate 33 and the sliding plate 22 are reset under the elastic force of the corresponding reset spring 32 and the telescopic spring 23, so that the card plate 24 is again located in the card slot 25 (if the sensor or identifier fails and causes the transmission rod 16 to idle, the card plate 24 cannot be aligned with the card slot 25, and the footboard 1 cannot be retracted normally. At this time, the driver can directly judge that the identifier and the sensor are faulty by the fact that the footboard 1 cannot be retracted, and can then repair them in time and manually align the card plate 24 with the card slot 25). If the sensor and the identifier are normal, the transmission rod 16 will not rotate. At this time, when the passengers have completely boarded or alighted from the vehicle, the sliding plate 22 is reset under the elastic force of the telescopic spring 23, so that the card plate 24 is reinserted into the card slot 25. At this time, when the door of the electric vehicle is closed, the sensor transmits a closing signal to control the retraction of the footboard 1.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An anti-pinch electric pedal, comprising a pedal board (1), characterized in that: It also includes an extension unit arranged on the footboard (1), the extension unit including a moving part and a driving part arranged on the footboard (1); The moving parts include a plurality of fixed plates (2) arranged on the side wall of the footboard (1), rotating shafts (3) respectively arranged at the lower ends of the plurality of fixed plates (2), a movable plate (4) arranged on the outer wall of the rotating shaft (3), a plurality of rotating rods (5) respectively arranged at one end of the plurality of movable plates (4), a plurality of fixed seat plates (6) respectively arranged at both ends of the plurality of rotating rods (5), a plurality of linkage gears (7) respectively arranged on the outer walls of the plurality of rotating rods (5), and a transmission chain (8) arranged between the plurality of linkage gears (7); The plurality of rotating shafts (3) are fixedly mounted on the lower ends of the corresponding fixed plates (2), the plurality of movable plates (4) are slidably mounted on the outer walls of the corresponding rotating shafts (3), one ends of the plurality of movable plates (4) are fixedly mounted on the outer walls of the corresponding rotating rods (5), and the transmission chain (8) is sleeved and mounted between each linkage gear (7).

2. The anti-pinch electric pedal according to claim 1, characterized in that: The driving component comprises a driving cover (9) arranged on the upper end of a fixed seat plate (6) located in the middle position, a pad (10) arranged on the upper end of the fixed seat plate (6), a servo motor (11) arranged on the upper end of the pad (10), a driving rod (12) arranged on the driving end of the servo motor (11), a bevel gear (13) arranged on one end of the driving rod (12), an intermediate plate (14) arranged on the fixed seat plate (6), a mounting circular groove provided on the intermediate plate (14), and a mounting groove provided on the mounting plate (14). A one-way bearing (15) is installed in a circular groove, a transmission rod (16) is arranged on the inner ring of the one-way bearing (15), a connecting plate (17) is arranged on the upper end of the transmission rod (16), and a second bevel gear (18) is arranged on the connecting plate (17). The first bevel gear (13) and the second bevel gear (18) are meshed with each other. A transmission component is installed between the one-way bearing (15) and the corresponding rotating rod (5), and a clamping component is installed between the transmission rod (16) and the outer ring of the one-way bearing (15).

3. The anti-pinch electric pedal according to claim 2, characterized in that: The transmission assembly comprises a transition rod (19) arranged at the upper end of the corresponding rotating rod (5), and a connecting tube (20) arranged at the upper end of the transition rod (19), wherein the upper end of the connecting tube (20) is fixedly connected to the lower end of the outer ring of the one-way bearing (15).

4. The anti-pinch electric pedal according to claim 3, characterized in that: The engaging assembly comprises vertical grooves (21) provided on both sides of the outer wall of the transmission rod (16), a sliding plate (22) slidably installed in the two vertical grooves (21), a telescopic spring (23) installed between the sliding plate (22) and the connecting plate (17), two clamping plates (24) arranged at the lower end of the sliding plate (22), two clamping grooves (25) provided at the upper end of the outer ring of the one-way bearing (15), the lower ends of the two clamping plates (24) are located in the corresponding clamping grooves (25), and a lifting element is installed on the side wall of the sliding plate (22).

5. The anti-pinch electric pedal according to claim 4, characterized in that: The lifting element comprises a common bearing (26) arranged on the side wall of the sliding plate (22), a side plate (27) arranged on the outer ring of the common bearing (26), two lifting rods (28) arranged at the lower end of the side plate (27), two liquid level cylinders (29) arranged in the fixed seat plate (6), and piston plates (30) respectively arranged at the lower ends of the two lifting rods (28). The two piston plates (30) are respectively slidably mounted on the inner walls of the corresponding liquid level cylinders (29), and a control component is installed between the two liquid level cylinders (29) and the footboard (1).

6. The anti-pinch electric pedal according to claim 5, characterized in that: The control component comprises a square groove (31) provided at the upper end of the footboard (1), two return springs (32) arranged at the bottom end of the square groove (31), a trigger plate (33) arranged at the upper end of the two return springs (32), the trigger plate (33) being slidably mounted in the square groove (31), a liquid dispensing block (34) arranged at the upper end of the movable plate (4) located at the middle position, a liquid infusion hole (35) provided on the inner wall of the square groove (31), a conduit 1 (36) arranged between the liquid infusion hole (35) and the liquid dispensing block (34), and two conduits 2 (37) arranged between the liquid dispensing block (34) and two liquid level cylinders (29), the two liquid level cylinders (29) being connected to the inside of the square groove (31) through the conduit 2 (37) and the conduit 1 (36).

7. The anti-pinch electric pedal according to claim 6, characterized in that: The conduit 1 (36) and the conduit 2 (37) are both corrugated hoses, and the square groove (31), the conduit 1 (36), the conduit 2 (37) and the liquid distribution block (34) are all filled with hydraulic oil.

8. The anti-pinch electric pedal according to claim 7, characterized in that: A plurality of anti-slip grooves are provided at the upper end of the trigger plate (33).

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